Brad is exploring solute transport in the fractured shale at the Shale Hills Observatory. He's using lab and field data, as well as numerical models, to explore processes controlling fast and slow pathways in the watershed. Besides looking at things he can't see, like groundwater flow, he enjoys carpentry, the outdoors, and spending time with his family. E-mail Brad.

Aaron is working on better quantifying the real-time kinetics of dissimilatory iron reduction. To do so, he's combining biogeochemical analyses with electrical geophysical methods. Aaron is co-advised by Sue Brantley and is a member of the Center for Environmental Kinetics Analysis (CEKA). When not finding ways to integrate geobiology, geochemistry, and geophysics into one dissertation, you can find Aaron exploring his love for rocks by climbing all over them. E-mail Aaron.

Daniel is looking at incorporating geophysical measurements into hydrologic studies to understand tailing of solute breakthrough curves in fractured media. He's interested in heterogeneity controls and the impact of the geophysical "footprint" on imaging flow and transport processes at the field scale. E-mail Daniel.

Nathan is analyzing electrical geophysical data associated with stream tracer tests in the Leading Ridge watershed near campus as part of the dissertation work of Adam Ward, a PhD candidate in Civil Engineering. Working with Julianne Hagarty (below), he's pounded in more small steel stakes than he ever thought he'd need to, and is learning that the geophysical inverse problem, if you think about it long enough, will make you glow blue. Nathan likes traveling and being outdoors--especially camping and hiking. E-mail Nathan.

Terryl is researching how preferential pathways control the directionality of flow at the Shale Hills Observatory. He is characterizing how fracture anisotropy and dynamics between the aquifer and stream setting control fluid movement. When not busy in the field drilling wells with a miniature rig, Terryl can be found running all sorts of student organizations, serving as a Big Brother, and stepping. E-mail Terryl.

Ted is writing code to explore how annual variations in groundwater temperature affect hydraulic conductivity and consequently contaminant transport at a site near the Mohawk River in Schenectady, New York. Ted has managed the most concussions of any student in the hydro group by a factor of four. When not working (or concussed), he enjoys hockey (the root of the problems), remote control car racing and rock climbing. E-mail Ted.

Julianne is working to quantify how hyporheic pathways in streams behave geophysically. With Nathan Barber, above, she's deployed a 3-D electrical resistivity setup in the Leading Ridge watershed near campus, and will be collecting time-course data. In her free time, she serves as the hydro group's Renaissance woman: she reads, climbs trees, plays bassoon, works with the Solar Decathlon, cross-stitches, and does yoga. E-mail Julianne.

Kristen is exploring how hydraulic conductivity variations control the transport of N-15 at a field site at the University of Maryland Eastern Shore. She has been building and measuring flow in Darcy tubes given a number of soil samples with varying soil texture, and working closely with Mike Castellano, a PhD candidate in Crop and Soil Science. Besides her love of water, Kristen enjoys hiking, Penn State football, and watching movies with friends. E-mail Kristen.

M.S. Thesis title: Implications of Rate-Limited Mass Transfer for Aquifer Storage and Recovery Efficiency

Current Position: MACTEC Engineering & Consulting, Oakland, CA

Undergrad research in: solute mass transfer, spectral analysis of in-stream temperature data

Current Position: Ph.D. student in Medical Physics, University of Wisconsin-Madison

B.Sc. Thesis title: Exploration of Karst Development in Laurel Caverns Using Geochemical and Geophysical Techniques

Current Position: M.S. student in Karst Studies, Western Kentucky University